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Sampling Equipment <br /> Interim gas sampling probes were used to monitor ser ccEach gases at the landfillperimeter. <br /> probe consists of a S-fdot long, grinch diameter stainless steel pipe, with f-inch holes <br /> staggexed every 2 inches at the bottom 18 inch to allow for gases-to migzate into the probes. A <br /> pointed tip was welded to the end of the probe for bitter penetration. <br /> A ball valve and brass fitting were hmtalled at the top of each probe to contain gas prunes and <br /> facilitate irtsttument hook-up to the probe. a es were left closed except during monitoring <br /> or instrument reading.Each probe is tagged wi a brass plate and identified as `°GP-1" through <br /> AGA-90 Landtcc Infra rsd Gas Analyzer was used to monitor methane, carbon.dioxide.(C®�, <br /> and oxYgen(U.) levels at each probe location. -1banalyzer was calibrated for methane, COQ,and <br /> OZ prior to use in the field-Calibration.logs are-included in ih.isreport. <br /> Gas Monitoring <br /> Ambient air measurements of methane, oxygen, carbon dioxide; and baromettic-pressure-were - Y <br /> taken at each gas probe location. Those readings <br /> -were recopied and the <br /> instrument- was <br /> connected to the probe. 'The valve was opened and gmbc.gas pressure moments were taken._ <br /> The pzvbc was then. purged fortwo probe volumes. .Readings•were thou collected at <br /> approximately 3.4- to 60--second int i..a stable <br /> reading was .obtained._. These <br /> ]Measurements of methane, oxygen, carbon dioxide, and ambient barometric pressure wire then <br /> rcxorded_ Monitoring was also conducted at various locations in three building sites for the <br /> Presence of methane gas_ Monitoring was conducted at the office trailer at the cuttancc to the <br /> landfill, trailer boxes- at the service shop, and tnWer boxes at the transfer building. These <br /> locations were monitored!for any gas pockets at.the foundation and near any opening from the <br /> floor such as piping holes,electrical conduits,or foor cracks. <br /> LYSWE'TERS <br /> Lysime'tcxs were sampled using the following standard protocol: <br /> 1. <br /> Prior to sampling lyslmetcrs,the pr=ure-vacuurn equipment is checked.and cleaned. <br /> 23-433-949-FOI\23joRM A-12 <br /> zM Kkkldder.t=. July 14,2000 <br />